Fix #5225: Remove the EnableLanguageSelectionUi Feature Flag

app/src/main/java/org/oppia/android/app/options/OptionControlsViewModel.kt

@@ -18,8 +18,6 @@ import org.oppia.android.util.data.AsyncResult
 import org.oppia.android.util.data.DataProvider
 import org.oppia.android.util.data.DataProviders.Companion.combineWith
 import org.oppia.android.util.data.DataProviders.Companion.toLiveData
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
-import org.oppia.android.util.platformparameter.PlatformParameterValue
 import javax.inject.Inject
 
 /** [ViewModel] for [OptionsFragment]. */
@@ -32,7 +30,6 @@ class OptionControlsViewModel @Inject constructor(
   activity: AppCompatActivity,
   private val profileManagementController: ProfileManagementController,
   private val oppiaLogger: OppiaLogger,
-  @EnableLanguageSelectionUi private val enableLanguageSelectionUi: PlatformParameterValue<Boolean>,
   private val resourceHandler: AppLanguageResourceHandler,
   private val translationController: TranslationController
 ) : OptionsItemViewModel() {
@@ -112,13 +109,12 @@ class OptionControlsViewModel @Inject constructor(
   }
 
   private fun createAppLanguageViewModel(language: OppiaLanguage): OptionsAppLanguageViewModel? {
-    return if (enableLanguageSelectionUi.value) {
-      OptionsAppLanguageViewModel(
+    return OptionsAppLanguageViewModel(
         routeToAppLanguageListListener,
-        loadAppLanguageListListener, language,
+        loadAppLanguageListListener,
+        language,
         resourceHandler.computeLocalizedDisplayName(language)
       )
-    } else null
   }
 
   private fun createAudioLanguageViewModel(profile: Profile): OptionsAudioLanguageViewModel {

app/src/sharedTest/java/org/oppia/android/app/options/OptionsFragmentTest.kt

@@ -146,7 +146,6 @@ class OptionsFragmentTest {
 
   @Before
   fun setUp() {
-    TestPlatformParameterModule.forceEnableLanguageSelectionUi(true)
     Intents.init()
     setUpTestApplicationComponent()
     testCoroutineDispatchers.registerIdlingResource()
@@ -370,7 +369,6 @@ class OptionsFragmentTest {
 
   @Test
   fun testOptionsFragment_featureDisabled_appLanguageOptionIsNotDisplayed() {
-    TestPlatformParameterModule.forceEnableLanguageSelectionUi(false)
 
     launch<OptionsActivity>(
       createOptionActivityIntent(

app/src/test/java/org/oppia/android/app/testing/options/OptionsFragmentTest.kt

@@ -113,7 +113,6 @@ class OptionsFragmentTest {
 
   @Before
   fun setUp() {
-    TestPlatformParameterModule.forceEnableLanguageSelectionUi(true)
     TestPlatformParameterModule.forceEnableEditAccountsOptionsUi(
       ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
     )
@@ -171,7 +170,6 @@ class OptionsFragmentTest {
 
   @Test
   fun testOptionsFragment_featureDisabled_appLanguageItemIsNotDisplayed() {
-    TestPlatformParameterModule.forceEnableLanguageSelectionUi(false)
     launch<OptionsActivity>(createOptionActivityIntent(0, true)).use {
       testCoroutineDispatchers.runCurrent()
 

domain/src/main/java/org/oppia/android/domain/platformparameter/PlatformParameterAlphaKenyaModule.kt

@@ -12,7 +12,6 @@ import org.oppia.android.util.platformparameter.ENABLE_DOWNLOADS_SUPPORT_DEFAULT
 import org.oppia.android.util.platformparameter.ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_SPOTLIGHT_UI_DEFAULT_VALUE
@@ -22,7 +21,6 @@ import org.oppia.android.util.platformparameter.EnableEditAccountsOptionsUi
 import org.oppia.android.util.platformparameter.EnableExtraTopicTabsUi
 import org.oppia.android.util.platformparameter.EnableFastLanguageSwitchingInLesson
 import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeStateRetention
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
@@ -94,14 +92,6 @@ class PlatformParameterAlphaKenyaModule {
     )
   }
 
-  @Provides
-  @EnableLanguageSelectionUi
-  fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-    return PlatformParameterValue.createDefaultParameter(
-      ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-    )
-  }
-
   @Provides
   @EnableEditAccountsOptionsUi
   fun provideEnableEditAccountsOptionsUi(): PlatformParameterValue<Boolean> {

domain/src/main/java/org/oppia/android/domain/platformparameter/PlatformParameterAlphaModule.kt

@@ -12,7 +12,6 @@ import org.oppia.android.util.platformparameter.ENABLE_DOWNLOADS_SUPPORT_DEFAULT
 import org.oppia.android.util.platformparameter.ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.EnableAppAndOsDeprecation
@@ -21,7 +20,6 @@ import org.oppia.android.util.platformparameter.EnableEditAccountsOptionsUi
 import org.oppia.android.util.platformparameter.EnableExtraTopicTabsUi
 import org.oppia.android.util.platformparameter.EnableFastLanguageSwitchingInLesson
 import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeStateRetention
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
@@ -91,14 +89,6 @@ class PlatformParameterAlphaModule {
     )
   }
 
-  @Provides
-  @EnableLanguageSelectionUi
-  fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-    return PlatformParameterValue.createDefaultParameter(
-      ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-    )
-  }
-
   @Provides
   @EnableEditAccountsOptionsUi
   fun provideEnableEditAccountsOptionsUi(): PlatformParameterValue<Boolean> {

domain/src/main/java/org/oppia/android/domain/platformparameter/PlatformParameterModule.kt

@@ -12,7 +12,6 @@ import org.oppia.android.util.platformparameter.ENABLE_DOWNLOADS_SUPPORT_DEFAULT
 import org.oppia.android.util.platformparameter.ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_SPOTLIGHT_UI_DEFAULT_VALUE
@@ -22,7 +21,6 @@ import org.oppia.android.util.platformparameter.EnableEditAccountsOptionsUi
 import org.oppia.android.util.platformparameter.EnableExtraTopicTabsUi
 import org.oppia.android.util.platformparameter.EnableFastLanguageSwitchingInLesson
 import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeStateRetention
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
@@ -93,14 +91,6 @@ class PlatformParameterModule {
     )
   }
 
-  @Provides
-  @EnableLanguageSelectionUi
-  fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-    return PlatformParameterValue.createDefaultParameter(
-      ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-    )
-  }
-
   @Provides
   @EnableEditAccountsOptionsUi
   fun provideEnableEditAccountsOptionsUi(): PlatformParameterValue<Boolean> {

domain/src/test/java/org/oppia/android/domain/oppialogger/LoggingIdentifierControllerTest.kt

@@ -40,8 +40,6 @@ import org.oppia.android.util.logging.GlobalLogLevel
 import org.oppia.android.util.logging.LogLevel
 import org.oppia.android.util.logging.SyncStatusModule
 import org.oppia.android.util.networking.NetworkConnectionUtilDebugModule
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.PlatformParameterValue
 import org.oppia.android.util.platformparameter.SPLASH_SCREEN_WELCOME_MSG_DEFAULT_VALUE
@@ -370,14 +368,6 @@ class LoggingIdentifierControllerTest {
       )
     }
 
-    @Provides
-    @EnableLanguageSelectionUi
-    fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-      return PlatformParameterValue.createDefaultParameter(
-        ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-      )
-    }
-
     @Provides
     @EnableLearnerStudyAnalytics
     fun provideLearnerStudyAnalytics(): PlatformParameterValue<Boolean> {

domain/src/test/java/org/oppia/android/domain/oppialogger/OppiaLoggerTest.kt

@@ -42,8 +42,6 @@ import org.oppia.android.util.logging.GlobalLogLevel
 import org.oppia.android.util.logging.LogLevel
 import org.oppia.android.util.logging.SyncStatusModule
 import org.oppia.android.util.networking.NetworkConnectionUtilDebugModule
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.PlatformParameterValue
 import org.oppia.android.util.platformparameter.SPLASH_SCREEN_WELCOME_MSG_DEFAULT_VALUE
@@ -391,14 +389,6 @@ class OppiaLoggerTest {
       )
     }
 
-    @Provides
-    @EnableLanguageSelectionUi
-    fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-      return PlatformParameterValue.createDefaultParameter(
-        ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-      )
-    }
-
     @Provides
     @EnableLearnerStudyAnalytics
     fun provideLearnerStudyAnalytics(): PlatformParameterValue<Boolean> {

testing/src/main/java/org/oppia/android/testing/platformparameter/TestPlatformParameterModule.kt

@@ -13,15 +13,13 @@ import org.oppia.android.util.platformparameter.ENABLE_DOWNLOADS_SUPPORT_DEFAULT
 import org.oppia.android.util.platformparameter.ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.EnableAppAndOsDeprecation
 import org.oppia.android.util.platformparameter.EnableDownloadsSupport
 import org.oppia.android.util.platformparameter.EnableEditAccountsOptionsUi
 import org.oppia.android.util.platformparameter.EnableExtraTopicTabsUi
 import org.oppia.android.util.platformparameter.EnableFastLanguageSwitchingInLesson
 import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeStateRetention
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
@@ -118,11 +116,6 @@ class TestPlatformParameterModule {
     )
   }
 
-  @Provides
-  @EnableLanguageSelectionUi
-  fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> =
-    PlatformParameterValue.createDefaultParameter(enableLanguageSelectionUi)
-
   @Provides
   @EnableEditAccountsOptionsUi
   fun provideEnableEditAccountsOptionsUi(): PlatformParameterValue<Boolean> =
@@ -272,7 +265,6 @@ class TestPlatformParameterModule {
 
   companion object {
     private var enableDownloadsSupport = ENABLE_DOWNLOADS_SUPPORT_DEFAULT_VALUE
-    private var enableLanguageSelectionUi = ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
     private var enableEditAccountsOptionsUi = ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
     private var enableLearnerStudyAnalytics = LEARNER_STUDY_ANALYTICS_DEFAULT_VALUE
     private var enableFastLanguageSwitchingInLesson =
@@ -289,18 +281,11 @@ class TestPlatformParameterModule {
       NPS_SURVEY_MINIMUM_AGGREGATE_LEARNING_TIME_IN_A_TOPIC_IN_MINUTES_DEFAULT_VALUE
     private var gracePeriodInDays = NPS_SURVEY_GRACE_PERIOD_IN_DAYS_DEFAULT_VALUE
 
-    /** Enables forcing [EnableLanguageSelectionUi] platform parameter flag from tests. */
     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
     fun forceEnableDownloadsSupport(value: Boolean) {
       enableDownloadsSupport = value
     }
 
-    /** Enables forcing [EnableLanguageSelectionUi] platform parameter flag from tests. */
-    @VisibleForTesting(otherwise = VisibleForTesting.NONE)
-    fun forceEnableLanguageSelectionUi(value: Boolean) {
-      enableLanguageSelectionUi = value
-    }
-
     /** Enables forcing [EnableEditAccountsOptionsUI] platform parameter flag from tests. */
     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
     fun forceEnableEditAccountsOptionsUi(value: Boolean) {
@@ -352,7 +337,6 @@ class TestPlatformParameterModule {
     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
     fun reset() {
       enableDownloadsSupport = ENABLE_DOWNLOADS_SUPPORT_DEFAULT_VALUE
-      enableLanguageSelectionUi = ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
       enableEditAccountsOptionsUi = ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
       enableLearnerStudyAnalytics = LEARNER_STUDY_ANALYTICS_DEFAULT_VALUE
       enableFastLanguageSwitchingInLesson = FAST_LANGUAGE_SWITCHING_IN_LESSON_DEFAULT_VALUE

utility/src/main/java/org/oppia/android/util/platformparameter/PlatformParameterConstants.kt

@@ -75,13 +75,6 @@ const val SYNC_UP_WORKER_TIME_PERIOD_IN_HOURS = "sync_up_worker_time_period"
  */
 const val SYNC_UP_WORKER_TIME_PERIOD_IN_HOURS_DEFAULT_VALUE = 12
 
-/** Qualifier for the feature flag corresponding to enabling the language selection UI. */
-@Qualifier
-annotation class EnableLanguageSelectionUi
-
-/** Default value for the feature flag corresponding to [EnableLanguageSelectionUi]. */
-const val ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE = true
-
 /**
  * Qualifier for the feature flag corresponding to enabling the extra topic tabs: practice and info.
  */

utility/src/test/java/org/oppia/android/util/logging/SyncStatusManagerImplTest.kt

@@ -23,8 +23,6 @@ import org.oppia.android.util.data.DataProvidersInjector
 import org.oppia.android.util.data.DataProvidersInjectorProvider
 import org.oppia.android.util.locale.LocaleProdModule
 import org.oppia.android.util.networking.NetworkConnectionUtilDebugModule
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.PlatformParameterValue
 import org.oppia.android.util.platformparameter.SPLASH_SCREEN_WELCOME_MSG_DEFAULT_VALUE
@@ -109,14 +107,6 @@ class SyncStatusManagerImplTest : SyncStatusManagerTestBase() {
       )
     }
 
-    @Provides
-    @EnableLanguageSelectionUi
-    fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-      return PlatformParameterValue.createDefaultParameter(
-        ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-      )
-    }
-
     @Provides
     @EnableLearnerStudyAnalytics
     fun provideLearnerStudyAnalytics(): PlatformParameterValue<Boolean> {

utility/src/test/java/org/oppia/android/util/logging/firebase/LogReportingModuleTest.kt

@@ -25,8 +25,6 @@ import org.oppia.android.util.logging.LoggerModule
 import org.oppia.android.util.logging.SyncStatusModule
 import org.oppia.android.util.logging.performancemetrics.PerformanceMetricsEventLogger
 import org.oppia.android.util.networking.NetworkConnectionUtilDebugModule
-import org.oppia.android.util.platformparameter.ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-import org.oppia.android.util.platformparameter.EnableLanguageSelectionUi
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.PlatformParameterValue
 import org.oppia.android.util.platformparameter.SPLASH_SCREEN_WELCOME_MSG_DEFAULT_VALUE
@@ -99,14 +97,6 @@ class LogReportingModuleTest {
       )
     }
 
-    @Provides
-    @EnableLanguageSelectionUi
-    fun provideEnableLanguageSelectionUi(): PlatformParameterValue<Boolean> {
-      return PlatformParameterValue.createDefaultParameter(
-        ENABLE_LANGUAGE_SELECTION_UI_DEFAULT_VALUE
-      )
-    }
-
     @Provides
     @EnableLoggingLearnerStudyIds
     fun provideLoggingLearnerStudyIds(): PlatformParameterValue<Boolean> {